Gruttolaan is een straat te Maartensdijk in de gemeente De Bilt en is gelegen in de Nederlandse provincie Utrecht.
| Postcode | Huisnummers |
|---|---|
| 3738 EV | 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23A, 23B, 23, 25, 27, 29, 31, 33, 35 GB1, 35 GB10, 35 GB11, 35 GB12, 35 GB13, 35 GB14, 35 GB2, 35 GB3, 35 GB4, 35 GB5, 35 GB6, 35 GB7, 35 GB8, 35 GB9, 35; |
| 3738 EW | 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32; |